ABSTRACT
ABSTRACT: Volume change effects are the combined result of creep, shrinkage and temperature strains. Although a frequent cause of distress, volume change is often ignored in the design of precast concrete buildings. Design for volume change effects is complicated by the unknown influence of flexible connections and the extreme variability of concrete strain and the resulting forces. The objectives of this research are to 1) develop a better understanding of volume change effects based on measured performance of precast structures, and 2) recommend revised design procedures that reflect this understanding and account for the influence of flexible connections. The research program includes field monitoring of movements and strains of four newly constructed parking structures, development of computer models that accurately predict volume change behavior, and reevaluation of design procedures.
